CN107024283A - A kind of method for measuring black matrix thermodynamic temperature - Google Patents
A kind of method for measuring black matrix thermodynamic temperature Download PDFInfo
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- CN107024283A CN107024283A CN201710341342.3A CN201710341342A CN107024283A CN 107024283 A CN107024283 A CN 107024283A CN 201710341342 A CN201710341342 A CN 201710341342A CN 107024283 A CN107024283 A CN 107024283A
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- 239000011159 matrix material Substances 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000005855 radiation Effects 0.000 claims abstract description 40
- 238000012360 testing method Methods 0.000 claims abstract description 30
- 238000001914 filtration Methods 0.000 claims abstract description 5
- 238000001228 spectrum Methods 0.000 claims abstract description 4
- 230000003595 spectral effect Effects 0.000 claims description 7
- 230000003321 amplification Effects 0.000 claims description 6
- 230000004907 flux Effects 0.000 claims description 6
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 6
- 230000002146 bilateral effect Effects 0.000 claims description 5
- 230000010287 polarization Effects 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000004313 glare Effects 0.000 claims description 3
- 230000004044 response Effects 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 230000005622 photoelectricity Effects 0.000 claims description 2
- 238000009738 saturating Methods 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 abstract description 2
- 230000003287 optical effect Effects 0.000 description 5
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004611 spectroscopical analysis Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
- 230000002463 transducing effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/52—Radiation pyrometry, e.g. infrared or optical thermometry using comparison with reference sources, e.g. disappearing-filament pyrometer
- G01J5/53—Reference sources, e.g. standard lamps; Black bodies
Abstract
The present invention relates to radiological measuring technical field, radiation spectrometer is placed in ad-hoc location to cause about 900 millimeters of aperture diaphragm and object under test distance by a kind of method of measurement black matrix thermodynamic temperature；The picture in the detected region observed using ccd video camera on object under test；The different zones that mobile radiation spectrometer comes on measuring targets are detected；Into the light of radiation spectrometer, twice after acousto-optic tunable filter, into photodiode, be converted into voltage signal and by transimpedance amplifier amplify after export arrowband output signal, output voltageAcousto-optic tunable filter filters out the light of the narrowband frequency range of some in light beam, change the microwave frequency of microwave generator output in the way of scanning, to regulate and control acousto-optic tunable filter scanning filtering narrow band light, and radiation spectrum of the object under test in wave-length coverage 650nm to 1000nm is obtained, and analyze with this thermodynamic temperature of object under test.
Description
Technical field
It is particularly a kind of using based on bilateral acousto-optic tunable filter the present invention relates to radiological measuring technical field
AOTF configurations, use specific light retroreflector, a kind of surveying of can effectively suppressing that the radiation spectrometer of diffraction secondary lobe tested
The method for measuring black matrix thermodynamic temperature.
Background technology
Tunable radiation spectrometer has application in many scientific researches and industrial processes, and main element therein is adjustable
Humorous band logical optical filter can be used for the power distribution for scanning broadband non-uniform source aggregate, such as the various interference for having a special film
Wave filter, the tunable liquid crystal filter based on Lyot-Ohman concepts, optical monochromator, acousto-optic tunable filter AOTF
Deng.Wherein, acousto-optic tunable filter AOTF is a kind of solid electrically adjusted band-pass filter, make use of the sound in anisotropic medium
Light principle, the momentum mismatch caused by angle change is compensated with double refraction amount with the change of angle, can be from incident light source
Middle selection, the light for transmiting single wavelength.The acousto-optic tunable filter AOTF sound optical medium of basic structure, electro-acoustic transducing
Device array and the part of acoustical terminal three, when radiofrequency signal is added on transducer, motivates ultrasonic wave and are coupled in acousto-optic medium；
When natural light with certain incident angles to the acousto-optic medium when, due to acousto-optic interaction, incident light is diffracted into two beams
Orthogonal linearly polarized light, i.e. ordinary light (o light) and extraordinary ray (e light), change ultrasonic frequency, two polarised light wavelength are also by phase
It should change.Wavelength (one be filtered off of transmitted light is controlled by changing the radiofrequency signal acted on AOTF electro-acoustic transducers
Order diffraction light), carrier frequency is changed according to wave-length coverage, it becomes possible to obtain the spectrum analysis of gamut；By adjusting radio frequency
The amplitude of signal, can also adjust transmitted light (filtering out light) intensity.The performance of spectroscopic analysis system is main by wavelength tuning range, light
Spectral resolution, secondary lobe determine that, due to the diffraction of light, the light in some ad-hoc location detected in spectroscopic analysis system exists
Frequency domain representation is the peak of a basic frequency, in addition also has some secondary small peaks in the peak both sides of basic frequency, here it is so-called
Secondary lobe.The radiation spectrometer based on AOTF of prior art is worked with single pass mode mostly, and it has the disadvantage, stronger due to having to spread out
Secondary lobe presence is penetrated, the meeting with outer light influences the work of single-pass AOTF radiation spectrometers, a kind of measurement black matrix thermodynamic temperature
Method can solve this problem.
The content of the invention
In order to solve the above problems, the present invention relates to a kind of radiation spectrometer based on bilateral AOTF, for high temperature meterological,
The thermokinetics temperature of high temperature blackbody in 1000 to 2500 degree Celsius ranges is determined, the wave-length coverage of test is in visible-range
650nm to 1000nm is adjustable.
The technical solution adopted in the present invention is：
A kind of method for measuring black matrix thermodynamic temperature, device mainly includes aperture diaphragm, apochromatic lens, light
Learn camera bellows, the polarizer, field stop, collimation lens, beam splitter, level crossing I, lens I, photodiode, transimpedance amplifier,
Arrowband output signal, Lyot diaphragms, acousto-optic tunable filter AOTF, lens II, level crossing II, microwave generator, CCD shootings
Machine, the apochromatic lens, the polarizer, field stop, collimation lens, beam splitter, level crossing I, lens I, photodiode,
Transimpedance amplifier, Lyot diaphragms, acousto-optic tunable filter AOTF, lens II, level crossing II, ccd video camera are located at described
Optics camera bellows is interior and constitutes radiation spectrometer, and the radiation spectrometer entrance side has object under test, mainly by lens II peace
Face mirror II constitutes light retroreflective system, and the microwave generator connects the acousto-optic tunable filter AOTF, the aperture diaphragm
30 millimeters of diameter and at the Optical Dark Solitary Pulse tank inlet, 1 millimeter of the field stop diameter, and then described treat can be determined
Solid angle Ω of the region relative to the radiation spectrometer being detected on object is surveyed, the polarizer is used for the line for controlling incident light
Property optical polarization direction, the ccd video camera is used to collect the p-polarization light that is reflected by the polarizer, with to described to be measured
The region being detected on object is imaged, and is used in the Lyot diaphragms of the leading flank of the acousto-optic tunable filter AOTF
Filtered in the modulation transfer function to radiation spectrometer, to reduce the veiling glare in device；The light that the object under test is sent
The aperture diaphragm, apochromatic lens, the polarizer, field stop, collimation lens, beam splitter, Lyot diaphragms is sequentially passed through to arrive
To be formed up to the acousto-optic tunable filter AOTF and being refracted and filter out light for the first time and project, the first time filters out light and passes through institute
State lens II and reach level crossing II and adjustable by the acousto-optic is again introduced into by the lens II after level crossing II reflections
In humorous wave filter AOTF, its polarization direction is constant after second reflects and forms second relative with the elementary beam direction of propagation
Secondary to filter out light, the light that filters out for the second time reaches the beam splitter by the Lyot diaphragms, and the beam splitter is used to cause about
20% light that filters out for the second time deflects, and is converted into electricity into the photodiode through the level crossing I and lens I
Signal is pressed, and by obtaining the arrowband output signal after transimpedance amplifier amplification.
It is described it is a kind of measure black matrix thermodynamic temperature method and step be：
The radiation spectrometer is placed in ad-hoc location by one, to cause the aperture diaphragm and object under test distance about 900
Millimeter；
On the picture in the detected region that two, are observed on object under test using the ccd video camera, the object under test only
The luminous energy that detected region is sent enters in the radiation spectrometer, and the area for being detected region is A；
Three, are detected by the mobile radiation spectrometer to the different zones on the object under test；
Four, enter the light of the radiation spectrometer, twice after the acousto-optic tunable filter AOTF, into described
Photodiode, is converted into voltage signal and exports the arrowband output signal after transimpedance amplifier amplification, export
VoltageWherein, G is transimpedance amplifier gain, and B is to enter institute
Ratio of the luminous flux relative to the luminous flux for entering the aperture diaphragm of photodiode is stated, λ represents wavelength, T2(λ, v0) be
Transmission coefficients of the acousto-optic tunable filter AOTF of bilateral configuration under some frequency, SPD(λ) is the pole of photoelectricity two
The spectral response of pipe, φi(λ) be input pharosage and its enter radiation spectrometer after depend on light source spectral radiance L
(λ), φi(λ)=Ω AL (λ)；
The microwave frequency that microwave generator described in five, is exported is in some fixed value, the acousto-optic tunable filter
AOTF filters out the light of the narrowband frequency range of some in light beam, changes the microwave generator output in the way of scanning
Microwave frequency, to regulate and control the acousto-optic tunable filter AOTF scannings filtering narrow band light, and obtains the object under test in ripple
Long scope 650nm to 1000nm radiation spectrum, and analyze with this thermodynamic temperature of object under test.
The beneficial effects of the invention are as follows：
Wavelengthtunable scope of the present invention is wide, low with outer luminous transparency, and radiation detection capability is strong, and sensitivity is high；Returned using light
The system of penetrating enables to light loss smaller.
Brief description of the drawings
Further illustrated with reference to the figure of the present invention：
Fig. 1 is schematic diagram of the present invention.
In figure, 1. light sources, 2. aperture diaphragms, 3. apochromatic lenses, 4. optics camera bellows, 5. polarizers, 6. field stops,
7. collimation lens, 8. beam splitters, 9. level crossing I, 10. lens I, 11. photodiodes, 12. transimpedance amplifiers, 13. arrowbands
Output signal, 14.Lyot diaphragms, 15. acousto-optic tunable filter AOTF, 16. lens II, 17. level crossing II, 18. microwaves hair
Raw device, 19.CCD video cameras.
Embodiment
If Fig. 1 is schematic diagram of the present invention, device mainly includes aperture diaphragm 2, apochromatic lens 3, optics camera bellows 4, risen
Inclined device 5, field stop 6, collimation lens 7, beam splitter 8, level crossing I 9, lens I 10, photodiode 11, transimpedance amplification
Device 12, arrowband output signal 13, Lyot diaphragms 14, acousto-optic tunable filter AOTF15, lens II 16, level crossing II 17,
Microwave generator 18, ccd video camera 19, the apochromatic lens 3, the polarizer 5, field stop 6, collimation lens 7, beam splitter
8th, level crossing I 9, lens I 10, photodiode 11, transimpedance amplifier 12, Lyot diaphragms 14, acousto-optic tunable filter
AOTF15, lens II 16, level crossing II 17, ccd video camera 19 are located in the optics camera bellows 4 and constitute radiation spectrometer, institute
Stating radiation spectrometer entrance side has object under test 1, mainly constitutes light retroreflective system by the lens II 16 and level crossing II17,
The microwave generator 18 connects the acousto-optic tunable filter AOTF15,30 millimeters of 2 diameter of aperture diaphragm and is located at
The porch of optics camera bellows 4,1 millimeter of 6 diameter of field stop, and then can determine to be detected on the object under test 1
Solid angle Ω of the region relative to the radiation spectrometer, the polarizer 5 is used to control what the linear optics of incident light was polarized
Direction, the ccd video camera 19 is used to collect the p-polarization light reflected by the polarizer 5, with to quilt on the object under test 1
The region of detection is imaged, the acousto-optic tunable filter AOTF15 leading flank the Lyot diaphragms 14 be used for pair
The modulation transfer function of radiation spectrometer is filtered, to reduce the veiling glare in device；The light that the object under test 1 is sent is successively
By the aperture diaphragm 2, apochromatic lens 3, the polarizer 5, field stop 6, collimation lens 7, beam splitter 8, Lyot diaphragms
14 reach the acousto-optic tunable filter AOTF15 and are refracted to be formed and filter out light injection for the first time, and the first time filters out light
After level crossing II 17 being reached by the lens II 16 and being reflected by the level crossing II 17 by the lens II 16 again
Secondary to enter in the acousto-optic tunable filter AOTF15, its polarization direction is constant after second reflects and is formed and former light
The beam direction of propagation it is relative filter out light for the second time, the light that filters out for the second time reaches the beam splitter by the Lyot diaphragms 14
8, the beam splitter 8 is used to about 20% light that filters out for the second time is deflected, and through the level crossing I 9 and lens I 10
Voltage signal is converted into the photodiode 11, and by obtaining described narrow after the transimpedance amplifier 12 amplification
Band output signal 13,
It is described it is a kind of measure black matrix thermodynamic temperature method and step be：
The radiation spectrometer is placed in ad-hoc location by one, to cause the aperture diaphragm 2 with object under test 1 apart from about
900 millimeters；
On the picture in the detected region that two, are observed on object under test 1 using the ccd video camera 19, the object under test 1
The luminous energy that only detected region is sent enters in the radiation spectrometer, and the area for being detected region is A；
Three, are detected by the mobile radiation spectrometer to the different zones on the object under test 1；
Four, enter the light of the radiation spectrometer, twice after the acousto-optic tunable filter AOTF15, into institute
State photodiode 11, be converted into voltage signal and by the transimpedance amplifier 12 amplify after export the arrowband output signal
13, output voltageWherein, G is transimpedance amplifier gain, and B is
Into ratio of the luminous flux relative to the luminous flux for entering the aperture diaphragm 2 of the photodiode 11, λ represents wavelength,
T2(λ, v0) it is transmission coefficients of the acousto-optic tunable filter AOTF15 of bilateral configuration under some frequency, SPD(λ) is
The spectral response of the photodiode 11, φi(λ) be input pharosage and its enter radiation spectrometer after depend on
The spectral radiance L (λ) of light source, φi(λ)=Ω AL (λ)；
The microwave frequency that microwave generator 18 described in five, is exported is in some fixed value, the acousto-optic tunable filter
AOTF15 filters out the light of the narrowband frequency range of some in light beam, changes the microwave generator 18 in the way of scanning defeated
The microwave frequency gone out, to regulate and control the acousto-optic tunable filter AOTF15 scannings filtering narrow band light, and obtains the determinand
Body 1 and analyzes with this thermodynamic temperature of object under test 1 in wave-length coverage 650nm to 1000nm radiation spectrum.
Claims (1)
1. a kind of method for measuring black matrix thermodynamic temperature, device mainly includes aperture diaphragm (2), apochromatic lens (3), light
Learn camera bellows (4), the polarizer (5), field stop (6), collimation lens (7), beam splitter (8), level crossing I (9), lens I (10), light
Electric diode (11), transimpedance amplifier (12), arrowband output signal (13), Lyot diaphragms (14), acousto-optic tunable filter
AOTF (15), lens II (16), level crossing II (17), microwave generator (18), ccd video camera (19), the apochromatism are saturating
Mirror (3), the polarizer (5), field stop (6), collimation lens (7), beam splitter (8), level crossing I (9), lens I (10), photoelectricity two
It is pole pipe (11), transimpedance amplifier (12), Lyot diaphragms (14), acousto-optic tunable filter AOTF (15), lens II (16), flat
Face mirror II (17), ccd video camera (19) are located in the optics camera bellows (4) and constitute radiation spectrometer, the radiation spectrometer entrance
Side has object under test (1), mainly constitutes light retroreflective system, the microwave hair by the lens II (16) and level crossing II (17)
Raw device (18) connects the acousto-optic tunable filter AOTF (15), 30 millimeters of aperture diaphragm (2) diameter and positioned at described
Optics camera bellows (4) porch, 1 millimeter of field stop (6) diameter, and then can determine to be visited on the object under test (1)
The region of survey is relative to the solid angle Ω of the radiation spectrometer, and the polarizer (5) is for controlling the linear optics of incident light inclined
The direction shaken, the ccd video camera (19) is used to collect the p-polarization light reflected by the polarizer (5), with to the determinand
The region being detected on body (1) is imaged, in the Lyot of the leading flank of the acousto-optic tunable filter AOTF (15)
Diaphragm (14) is used to filter the modulation transfer function of radiation spectrometer, to reduce the veiling glare in device；The determinand
The light that body (1) is sent sequentially passes through the aperture diaphragm (2), apochromatic lens (3), the polarizer (5), field stop (6), standard
Straight lens (7), beam splitter (8), Lyot diaphragms (14) reach the acousto-optic tunable filter AOTF (15) and are refracted to be formed
Light injection is filtered out for the first time, and the first time filters out light and reaches level crossing II (17) and described by the lens II (16)
It is again introduced into the acousto-optic tunable filter AOTF (15), is passed through by the lens II (16) after level crossing II (17) reflections
Cross second reflect after its polarization direction it is constant and formed and relative with the elementary beam direction of propagation filter out light, described second for the second time
The secondary light that filters out reaches the beam splitter (8) by the Lyot diaphragms (14), and the beam splitter (8) is used to causing the of about 20%
The secondary light that filters out deflects, and is changed through the level crossing I (9) and lens I (10) into the photodiode (11)
Into voltage signal, and by obtaining the arrowband output signal (13) after the transimpedance amplifier (12) amplification,
It is characterized in that：It is described it is a kind of measure black matrix thermodynamic temperature method and step be：
The radiation spectrometer is placed in ad-hoc location by one, to cause the aperture diaphragm (2) to be about with object under test (1) distance
900 millimeters；
The picture in the detected region that two, are observed on object under test (1) using the ccd video camera (19), the object under test (1)
The luminous energy that upper only detected region is sent enters in the radiation spectrometer, and the area for being detected region is A；
Three, are detected by the mobile radiation spectrometer to the different zones on the object under test (1)；
Four, enter the light of the radiation spectrometer, twice after the acousto-optic tunable filter AOTF (15), into described
Photodiode (11), is converted into voltage signal and the arrowband output letter is exported after the transimpedance amplifier (12) amplification
Number (13), output voltageWherein, G is that transimpedance amplifier increases
Benefit, B is ratio of the luminous flux relative to the luminous flux for entering the aperture diaphragm (2) into the photodiode (11), λ
Represent wavelength, T2(λ, v0) it is transmission system of the acousto-optic tunable filter AOTF (15) of bilateral configuration under some frequency
Number, SPD(λ) is the spectral response of the photodiode (11), φi(λ) is input pharosage and it is entering radiation
The spectral radiance L (λ), φ of light source are depended on after spectrometeri(λ)=Ω AL (λ)；
The microwave frequency that microwave generator (18) described in five, is exported is in some fixed value, the acousto-optic tunable filter
AOTF (15) filters out the light of the narrowband frequency range of some in light beam, changes the microwave generator in the way of scanning
(18) microwave frequency of output, to regulate and control acousto-optic tunable filter AOTF (15) the scanning filtering narrow band light, and obtains institute
Radiation spectrum of the object under test (1) in wave-length coverage 650nm to 1000nm is stated, and analyzes with this heat of object under test (1)
Mechanics temperature.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710341342.3A CN107024283A (en) | 2017-05-04 | 2017-05-04 | A kind of method for measuring black matrix thermodynamic temperature |
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| CN201710341342.3A CN107024283A (en) | 2017-05-04 | 2017-05-04 | A kind of method for measuring black matrix thermodynamic temperature |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5039855A (en) * | 1990-03-05 | 1991-08-13 | Bran+Luebbe Analyzing Technologies, Inc. | Dual beam acousto-optic tunable spectrometer |
| US5216484A (en) * | 1991-12-09 | 1993-06-01 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Real-time imaging spectrometer |
| US5438406A (en) * | 1993-10-07 | 1995-08-01 | The Titan Corporation | Tunable narrowband spectrometer with acousto-optical tunable filter |
| CN102645278A (en) * | 2012-05-07 | 2012-08-22 | 北京航空航天大学 | Radio frequency drive control method for hyper-spectral imager of acousto-optic tunable filter |
| FR3021111A1 (en) * | 2014-05-15 | 2015-11-20 | Conservatoire Nat Arts | WAVELENGTH-CONNECTABLE PYROMETER FOR RADIOMETRICALLY MEASURING THE TEMPERATURE OF A BODY |
-
2017
- 2017-05-04 CN CN201710341342.3A patent/CN107024283A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5039855A (en) * | 1990-03-05 | 1991-08-13 | Bran+Luebbe Analyzing Technologies, Inc. | Dual beam acousto-optic tunable spectrometer |
| US5216484A (en) * | 1991-12-09 | 1993-06-01 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Real-time imaging spectrometer |
| US5438406A (en) * | 1993-10-07 | 1995-08-01 | The Titan Corporation | Tunable narrowband spectrometer with acousto-optical tunable filter |
| CN102645278A (en) * | 2012-05-07 | 2012-08-22 | 北京航空航天大学 | Radio frequency drive control method for hyper-spectral imager of acousto-optic tunable filter |
| FR3021111A1 (en) * | 2014-05-15 | 2015-11-20 | Conservatoire Nat Arts | WAVELENGTH-CONNECTABLE PYROMETER FOR RADIOMETRICALLY MEASURING THE TEMPERATURE OF A BODY |
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